newton



R. T. NEWTON;

BUMPER.

APPLICATION FILED 020.12. ms.

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BUMPER. v in? APPUCATIGN FILED DECJZ, x916.

1,343,740. Patnted June 15, 1920.

t 2 SHEETS--SHEET 2.

RICHARD T. NEWTON, OF NEW YORK, N. Y.

BUMPER.

Specification of Letters Patent.

Patented J unc 15, 1920.

Application filed December 12, 1916. Serial No. 136,475.

To all "whom it may concern:

Be it known that I, RICHARD T. NrnvnoN, a citizen of the United States of America, and residing in the city, county, and State of New York, have invented a certain new and Improved Bumper, of which the followin is a specification.

1y invention relates to bumpers and particularly to bumpers for automobiles, the object of my invention being to provide a bumper of improved construction which may be readily installed without injury to any portion of the autombile frame and whlch is light, strong and efiicient.

Referring to the accompanying drawing,

Figure 1 is a plan view of the front portion of a chassis showing a bumper in which my invention is embodied in one form;

Fig. 2 is a side elevation of one of the bumper supporting arms drawn to a larger scale Fig. 3 is a section through the chassis frame on the line 3-3, Fig. 2;

Fig. L is a section on the same line through a modified construction;

Fig. 5 is a side elevation of a supporting arm of modified construction;

Fig. 6 is a cross section of one of the guide brackets shown in Fig. 5'

Fig. 7. is a side elevation of a modified attaching bracket;

Fig. 8 is a cross section on line 8-8, Fig 7 Fig. 9 is a artial elevation of another modification 0 the supporting arm; and

Fig. 10 is a section on line l0--10, Fig. 9.

In the construction illustrated in Figs. 1 to 3, the bumper bar 10, which is here shown by way of example as of channel section, is supported by spring arms 11 and 12 extending from the side bars 13 and 14 of the chassis. Each arm comprises an upper spring strap a and a lower spring strap b. These straps may be integral, but preferably are independent of each other, as shown, so that the longer upper strap a may be of heavier material than the lower strap b. The forward end of the strap 6 lies against the bottom flange of the bar 10, while the forward end of the strap a is bent to form a knuckle 15 abutting the upper flange of the bar 10 and is further offset at 16 to overlie the forward end of the strap 6. A bolt 17 passing through the two straps and the lower flange of the bar 10 and provided with the nut 18, clamps the spring arm rigidly to the bumper bar.

The upper strap a is carried back to a suitable abutment on the side bar 13 of the chassis. In the present construction I have utilized as this abutment the bracket 19 and the rod 20 which are commonly provided as a support for the front wheel mud guards. The rear end of the strap a is perforated to pass over the threaded lower end of the rod 20 and is clamped by the nut 21 between the latter and ,the bracket eye 22. Between its ends a spring bend 23 is imparted to the strap a to permit the latter to yield oh impact against the bumper bar.

The lower strap 1) is carried in a spring loop 24 backward and downward to a lug 25 on a bracket 26, and is riveted thereto. The bracket '26 fits over the usual egg-shaped protuberance 27 at the forward end of the :hassis bar 13 and grips the latter with its side flanges 28. It is centrally perforated to pass over the spring bolt 29 and is clamped upon the boss 27 by screwing up the usual nut 30 on the spring bolt.

In order to steady the supporting arm and prevent its vibration on ordinary road travel, the bracket 26 is provided with an upwardly extending arm 31 carrying a vertically adjustable channel guide 32 in which lies the lower strap b. The curvature of the bend 24. in the latter is such that the forward portion of the strap b, is constantly pressed downward against the bottom of the guide 32 so that there is no looseness or rattling of the parts under ordinary conditions. The vertical adjustability of the guide 32 permits the bumper bar to be properly positioned with relation to the chassis frame in spite of various curvatures for the front ends of the side bars 13 and 14.

Upon impact against the buffer bar the springs 04 and b yleld in a vertical plane, as shown, and the sprin curves 23 and 24 take positions substantialiy as shown in broken lines in Fig 2.

Instead of mountin the guide bracket 26 on the bolt 29, as in Tiger. 2 and 3, I may clamp it over the bolt heads as indicated in Fig. 4. In this case the bracket 33 is provided with a recess 34 which fits over the nut 30 of the spring bolt 29 and is carried below the channel 18 in the form of a sleeve 35 through which passes a. clamping bolt 36. A cooperating clamp 37 fits over the head 38 of the s ring bolt and is in turn provided with a s eeve 39 through which the draw-up bolt 36 also passes. When the nut 40 is chassis, each of said spring arms comprising a spring strap, and an associated guide clamped at the front end of a chassis side bar for supporting said spring arm against vibration.

9. An automobile bumper comprising a transverse bumper bar, and a pair of spring arms extending between the same and the chassis, each of said arms comprising a spring strap, and a guide through which said strap passes with freedom of longitu dinal displacement said guide serving to hold the arm against vibration.

10. An automobile bumper comprising a transverse bumper bar, and a pair of spring arms extendin between the same and the chassis, each 0 said arms comprising a vertically flexible spring strap and a guide through which said strap passes with freedom of longitudinal displacement said guide serving to hold the arm against vibration.

11. An automobile bumper comprising a transverse bumper bar and a pair of spring arms extendin between the same and the chassis, each 0 said arms comprising a pair of spring straps lying in substantially the same vertical plane and oppositely bowed to flex in said plane.

12. An automobile bumper comprising a transverse bumper bar and a pair of spring arms extending between the same and the chassis, each of said arms comprising a pair of spring straps lying in substantially the same vertical .plane and oppositely bowed to flex in said plane, together with a guide through which said straps freely pass, said guide serving to hold the arm against vibration.

13. An automobile bumper transverse bumper bar, an a pair of spring arms extendin between the same and the chassis, each 0 said arms com rising a pair of s ring straps the forwar portions of whic are substantially straight and parallel and the rear portions of which are spaced apart and bowe to afford fi'exion in a vertical plane.

14. An automobile bum er comprising a transverse bumper bar, an a pair of spring arms extendin between the same and the chassis, each 0 said arms com rising a pair of spring straps the forwar portions of which are substantially straight and parallel and the rear ortions of which are bowed to afford flexlon in a vertical plane, together with a guide through which the forward portion of the arms; pass to hold the same against vibration.

15. An automobile bum er comprising a transverse bumper bar, an a pair of spring arms extending between the same and the chassis each of said arms com rising a pair 0 spring straps the forwar portions of which are substantially straight and parallel, and the rear portions of whitfh are comprising a oppositely bowed to afford flexion in a vertical plane.

16. In an automobile bumper device for a chassis having a side bar with a lateral protuberance at its end, a supporting bracket comprising a plate adapted to fit over said lateral protuberance and pierced to accommodate the spring bolt passing through the side frame, said plate being adapted to be held in position by a nut on said spring bolt.

17. An automobile bumper comprising a transverse bumper bar and a spring arm for supportinfg the same, said arm comprising a pair 0 straps arranged in substantially the same vertical plane and having a strut portion extending rearward from the bumper bar, and a curved flexible portion to the rear of said strut portion adapted to yield in said vertical )lane.

18. An automobile umper comprising a transverse bumper bar and a spring arm for supporting the same, said arm including a pair of vertically spaced straps each having a strut portion attached to the bumper bar and a curved flexible portion to the rear thereof, yieldable in a vertical plane.

19. An automobile bumper comprising a transverse bumper bar and a spring arm for supporting the same, said arm comprising a pair of vertically spaced straps each having a strut portion extending rearward from the bumper, and a curved spring ortion to the rear of said strut portion an an abutment for said spring arm on the chassis side bar to the rear of its front end.

20. An automobile bumper comprising a transverse bumper bar and a spring supporting arm therefor comprising a air of straps having strut portions extendi forward of the chassis to the bumper, an having curved portions to the rear of said strut portions and a common abutment for said stra s at a point to the rear of the front end of tile chassis side bar.

21. In combination with a chassis side bar havin a downwardliy curved end, a transverse umper bar an a spring arm su porting the same, said spring arm inclu ing a strap having a strut portion engaging the bumper bar and a curved flexible portion to the rear thereof, together with an abutment for said spring arm secured to said chassis side bar at a oint at the rear of the curved front end in combination with guide means for the strut portion ofthe arm.

22. In an automobile bumper, a transverse bumper bar and a s ring arm therefor comprising a pair of vertically s aced straps yielding in a. vertical plane an having an abutment at the side 0 and at the rear of the front end of the chassis side bar, sai abutment being secured to said side bar at a point below the upper flange thereof.

23. In an automobile bumper u trans verse bumper bar and a spring arm therefor yielding in a vertical plane and having no abutment at the sitle of, and at, the rear of the front end of the chassis side bar, seitl abutment comprising a clamping device secured solely to the lower fl: ge of a side bar of channel section.

24. In un automobile bumper, a trans verse bumper bar and a spring arm therefor yielding in :1 vertical plane nml having an abutment at the side of, tllltl :it the rear of, the front end of the (-lmssis sille bur suitl abutment comprising u chimp f-r the end of the spring arm and hook means engaging the ower flange of the chassis side bar and serving as the sole means for holding suit] (lump in position on the chassis side frame.

111 testimony whereof 1 have signed my name to this specification, in the preserve of two subseribin witnesses.

1 1(JIAHD 'l. NllW'lt 5'? ll'ilnesses:

HAMUM. ll. SHAW, (ilCmltUE J. Syrnn. 

